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Finding the Fourth Proportional to 153.82, 229.64 and 133.44

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Solution

The fourth proportional to 153.82, 229.64 and 133.44 is: 199.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.82 : 229.64 = 133.44 : x
  2. Step 2: Convert to fraction form
    153.82/229.64 = 133.44/x
  3. Step 3: Cross multiply
    153.82x = 229.64 × 133.44
  4. Step 4: Simplify right side
    153.82x = 30,643.16
  5. Step 5: Solve for x
    x = 30,643.16/153.82
  6. Step 6: Final answer
    x = 199.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.